It should be said that there are experts that still argue strongly that we shouldn’t casually take large doses of Vitamin D. It’s not actually a vitamin. It’s a steroid hormone.

You can easily be misled about how much vitamin D you need because the skin makes a huge amount of it when exposed to sunlight.. but it does that as part of the process of protecting itself from sunlight, not because the body necessarily needs that much vitamin D.

Before you take large doses you should read and understand these articles.

https://www.devaboone.com/post/vitamin-d-part-1-back-to-basi...

https://www.devaboone.com/post/vitamin-d-part-2-shannon-s-st...

https://www.devaboone.com/post/vitamin-d-part-3-the-evidence